---
title: A helicopter's spinning blades are long thin wings going round in a… — Airports, the black box, helicopters and drones · tree and pragmatics
description: A helicopter's spinning blades are long thin wings going round in a circle, a drone does the same with four or more small rotors, and a hot-air balloon simply floats because hot air is lighter than cold air. Who acts: spinning blades, long thin wings, air balloon, hot air. A sentence of the lesson «
---

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# Airports, the black box, helicopters and drones, sentence 5

<!-- .ven lang=en -->
A helicopter's spinning blades are long thin wings going round in a circle, a drone does the same with four or more small rotors, and a hot-air balloon simply floats because hot air is lighter than cold air.

<!-- .vintro -->
**Who acts:** spinning blades, long thin wings, air balloon, hot air · **What happens:** be, go round, float · **To what, where:** long thin wings, circle

<!-- .vabout -->
This is a sentence of the lesson «Airports, the black box, helicopters and drones» of the technology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (spinning blades, long thin wings, air balloon, hot air), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:technology:023-airports-black-box-helicopters-drones.lesson:5
# text = A helicopter's spinning blades are long thin wings going round in a circle, a drone does the same with four or more small rotors, and a hot-air balloon simply floats because hot air is lighter than cold air.
# source = school lesson (ours)
# course = technology
# lesson = 023-airports-black-box-helicopters-drones.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×3, R6-punct-agree ×1, R7-rel-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	helicopter	helicopter	NOUN	NN	Number=Sing	5	nmod:poss	_	_
3	's	's	PART	POS	_	2	case	_	_
4	spinning	spinning	NOUN	NN	Number=Sing	5	compound	_	Agree=R7-rel-agree|Haiku=5:acl|HaikuPos=VERB:VBG:VerbForm=Ger
5	blades	blade	NOUN	NNS	Number=Plur	9	nsubj	_	_
6	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
7	long	long	ADJ	JJ	Degree=Pos	9	amod	_	Agree=R5-strong|Haiku=8:advmod|HaikuPos=ADV:RB:Degree=Pos
8	thin	thin	ADJ	JJ	Degree=Pos	9	amod	_	_
9	wings	wing	NOUN	NNS	Number=Plur	0	root	_	_
10	going	go	VERB	VBG	VerbForm=Ger	9	acl	_	_
11	round	round	ADV	RB	_	10	advmod	_	_
12	in	in	ADP	IN	_	14	case	_	_
13	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
14	circle	circle	NOUN	NN	Number=Sing	10	obl	_	_
15	,	,	PUNCT	,	_	17	punct	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
17	drone	drone	NOUN	NN	Number=Sing	18	nsubj	_	Agree=R5-strong|Haiku=14:conj
18	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	20	aux	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
20	same	same	ADJ	JJ	Degree=Pos	9	conj	_	_
21	with	with	ADP	IN	_	22	case	_	_
22	four	four	NUM	CD	NumForm=Word|NumType=Card	20	obl	_	_
23	or	or	CCONJ	CC	_	26	cc	_	_
24	more	more	ADJ	JJR	Degree=Cmp	22	conj	_	Agree=R5-strong|Haiku=26:amod
25	small	small	ADJ	JJ	Degree=Pos	26	amod	_	_
26	rotors	rotor	NOUN	NNS	Number=Plur	22	conj	_	_
27	,	,	PUNCT	,	_	40	punct	_	_
28	and	and	CCONJ	CC	_	40	cc	_	_
29	a	a	DET	DT	Definite=Ind|PronType=Art	33	det	_	_
30	hot	hot	ADJ	JJ	Degree=Pos	32	amod	_	_
31	-	-	PUNCT	HYPH	_	30	punct	_	_
32	air	air	NOUN	NN	Number=Sing	33	compound	_	_
33	balloon	balloon	NOUN	NN	Number=Sing	35	nsubj	_	_
34	simply	simply	ADV	RB	_	35	advmod	_	_
35	floats	float	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	20	conj	_	_
36	because	because	SCONJ	IN	ExtPos=ADP	40	mark	_	_
37	hot	hot	ADJ	JJ	Degree=Pos	38	amod	_	_
38	air	air	NOUN	NN	Number=Sing	40	nsubj	_	_
39	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	40	cop	_	_
40	lighter	light	ADJ	JJR	Degree=Cmp	35	advcl	_	_
41	than	than	ADP	IN	_	43	case	_	_
42	cold	cold	ADJ	JJ	Degree=Pos	43	amod	_	_
43	air	air	NOUN	NN	Number=Sing	40	obl	_	_
44	.	.	PUNCT	.	_	9	punct	_	Agree=R6-punct-agree|Haiku=20:punct
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | a helicopter's spinning blades | long thin wings |  |  |  |  | tree rules |
| 2 | **go round** | gerund | long thin wings *not said here* |  |  | a circle |  | round *property* | vn occur-48.3-2 «NP V PP»: agent=Theme in circle=Location |
| 3 | **be** | present · do-support | a helicopter's spinning blades *not said here* |  |  |  |  | with four or small rotors | tree rules |
| 4 | **float** | present | a air balloon |  |  |  |  | simply *property* | vn run-51.3.2-2 «NP V»: agent=Theme |
| 5 | **is** | present | hot air |  |  |  |  | than cold air; light *property* | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:technology:023-airports-black-box-helicopters-drones.lesson:5`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×3, R6-punct-agree ×1, R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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